Machine for cutting friction fabrics.



L. ATWOOD. momma FORYGUTTING rmcmon mamas. APPLICATION FILED MAY 12,1908. 933,688, Patented Sept. 7, 1909.

5 BHEETFSHEET 1.

is w

L. ATWOOD. MACHINE FOB UUTTING FRICTION FABRICS. 7 APPLICATION rILnn my12, 1909.

Patel'lted Sept. 7, 1909.

6 SHEETS-SHEET 2.

8 a a "is 5 N I a 6 iv I h a e "s U D FQ Q QJ e S. 3 JD U E Q b s ".35:ff

J k "E '1 n I 5 m; We"

1' 3 v x g I 12; r]

2 IzOifii m 5 $5 l 0 w 7 I r ,I J v I Mg WW %Wm M .L. ATWOOD. MACHINEFOR CUTTING FRICTION mamas.

APPLICATION FILED MAY 12, 1908.

9 0T mm .H .H

.P am Hz.1 m m 7m m v P 1 F 4- I fi 2W n n. 2 9 2 n LH Z d L. ATWOOD.

MACHINE FOB CUTTING FRICTION FABRICS. APPLICATION FILED MAY-12, 1908.

Patented Sept. 7, 1909.

5 SHEETS-SHEET 4.

L. ATWOOD.

MACHINE FOR CUTTING FRICTION FABRICS.

APPLIOATION FILED MAY 12. 1908.

933,688. Patented Sept. 7,1909.

5 sums-sum 5Q fffifl seek 1MB 59 L z lemuwdflwood;

' XWKXW LEONARD ATWOOD, .OF PHILADELPHIA,

. reference UNITED STATES PATENT oEEIoE.

PENNSYLVANIA, ASSI GNOR OF ONE-THIRD T0 ALBERT H. GILLARDfOF BROOKLYN,NEW YORK.

MACHINE FOR CUTTING FRICTION FABRICS.

Specification of Letters Patent.

Patented Sept. '7, .1909.

Application filed May 12, 1908. Serial No. 432,532.

To all whom it may concern:

Be it known that I, LEONARD A'rwoon, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Machines for Cutting Friction Fabries,of which thefollowing is a specification.

My invention relates to certain improve ments in machines for cuttingwhat is known friction fabric, that is, a fabric having a plasticsubstance applied to one or both sides thereof and adapted for use inthe manufacture of rubber hose, pipes or belt-- ing. It will beunderstood that the machine may be used for cutting fabrics coated withother material-than rubber having a sticky or adhesive nature.

Owing to the adhesive qualities of the mixture employed to coat thefabric it is extremely diflicult to handle or cut the fabric afterfriction has been applied, and difiicult and, sometimes, impossible topass the material between rolls, and any substance of a neutralizingnature coming in contact with the surface of the fabric, after the samehas been coated or frictioned, will destroy the adhesive qualities andproduce a defective product.

The object of my invention is to construct a machine which can be drivenby power and which will cut the friction fabric in strips on a bias, asfully described hereafter, being bad to the accompanying drawings, inwhich 2- Figure l, is a plan view of my improved cloth cutting machine;Fig. 2, is a side view; Fig. 3, is a longitudinal sectional view of thetable on the line 3-3, Fig. 1; Fig. 4, is ah end' view; Fig. 5, is aside view of the carriage looking in the direction of the arrow 5, Fig.1; Fig. 6, is a side view of the table looking in the direction ofthearrow 6, Fig. 1; Fig. 7, is a transverse sectional view on the line7-7, Fig. 1; Fig.-8,"is an enlarged sectional view Fig. 9, is asectional view on the line 99, Fig. i; and Figs. 10 and 11, areperspective views of difierent forms of clamps forsecuring the frictioncloth to the carriage.

Ais the table ofthe machine mounted on suitable standards A, A and anynumber I of part of the table. and carriage on the line 8-8, Figs. 1'and 5;

of intervening supports as desired. This table is hollow, as shown inFigs. 3 and 8, and is preferably dividedinto three or more sectionsand'has a series of diagonal grooves a in its face spaced a given distance apart, according to the thickness of the friction cloth to be cut.The table has a series of perforations a forming communication betweenthe space under the table and the grooves, so that air can be drawnthrough the openings to create a suction and the cloth will be heldto'the plate by suction.

C is an air suction pump, in the present instance communicating throughpipes 0 with the three compartments 0. This pump can be driven by anysuitable mechanism other than the mechanism for traversing the carriage.

The friction cloth is Wound upon the drum B detachably mounted inbearings a in the end of the standard- A and is held in place by clampsa but any form of detachable bearing may-be used without departing frommy invention. On the spindle of the drum is a ratchet wheel I) andpivoted to the standard is a lever I) having a bar I) which engages theratchet wheel. a

b is a segment having a series of perforations; in any one of theseperforations a pin can be placed to limit the movement of the ratchetwheel. By this means the cloth is kept in a taut condition; the clothbeing held at the opposite end by an eccentrically mounted bearinghaving a handle I). I

D is the carriage carrying the cutter and this carriage is mounted totravel over the table A; being supported in the present instance by thetwo gear wheels e, e and a plain wheel d adapted to run in the waysbetween the table proper and the rack E. The table may be supported byother means if desired- On each side of the table are longitudinal racksE, E with which engage the pinions e, 6. These pinions are mounted onthe shaft E adapted to bearings d, d on the table. y i

e is a'hand wheel by which the shaft E can'be turned so as to traversethe carriage over the table by hand.

Adapted to ides f, f on one side of the table is a rack ar F havingteeth which are engaged by a pawl '11 pivoted at v to a bracket on thecarriage.

o is a handle for operating the bar to turn it either into or out ofengagement with the toothed bar Fig. 6. Means are connected to the rackbar F to give it a reciprocating motion so as to feed the carriageforward to bring it in line with the grooves in the table one afteranother to allow the cutter to cut the cloth diagonally in strips.

The mechanism for giving the bar F a reciprocating motion consists, inthe present instance, of a lever F pivoted at f to the table, andmounted in the lever is an adjustable block f actuated by a screw f andthis block is connected'to the bar F by a link 7, Fig. 6. On adjustingthe screw the block can be moved so asto increase or diminish the lengthof the stroke of the bar. The lower end-of the lever F is connected bya' rod i to a disk f on a shaft F cared to the power shaft F, which maybe riven by an independent motor or from the main shaft, as desired. Theshafted, F are mounted in suitable hearings in a frame F secured to 4the floor or to the main frame, as desired.

Mounted on thecarriage D-is a slide .G carrying the spindle g on whichis mounted the rotary cutter g. The slide G is adapted to rails D on thecarriage and between the rails in the present instance is a rack d withwhich meshes a pinion d on a shaft 0Z mounted in a bearing on the slide.The end of this shaft is shaped so as to receive a handle by which itcan be turned. By this means the slide can be moved by hand to anyposition desired on the carriage.

In order to reciprocate the slide over the surface of the table, I mounta sprocket wheel I1. on a shaft H at one end of the carriage, and passaround this sprocket wheel a chain it which extends around a wheel h atthe opposite side of the carriage; one end of the chain isfastened toone side of the slide G and the other end of the chain is fastened tothe other side of the slide.

On the shaft H is a pinion h which meshes with a wheel 72. mounted on astud h on the carriage, and this wheel has a crank pin 71. which isconnected to an arm I on a shaft I through a connecting rod The shaft Iis a square shaft in the present instance and the arm I is shapedtoconform to the shaft so that it will turn with the shaft but is free toslide with the carriage upon the shaft, being confined laterally to thecarriage in the present instance by a bracket 5' adapted to a groove inits hub.

Attached to the end ofthe shaft I in the present'instance is an arm Iconnected to the lever I by a rod 6 the lever being pivotedat i to thebase of the machine; The lever I has a pin i which enters a cam grooveis in a disk K mounted on a shaft K, Figs. 4 and 9, and on the inner endof this shaft is a beveled gear wheel is which meshes-with a beveledgear K on the shaft F so that asthe shaft F rotates, the shaft K willrotate with it and consequently reciprocate the lever I, which in turnwill reciprocate the shaft I and cause partial rotation of-the gearwheel h on the carriage.

The mechanism for rotating the cutter g which meshes with a gear wheel aon the shaft of. an electric motor N. This electric motor is mounted ona platform D projecting from the carriage D, so that as the carriage isreciprocated the cutter is driven rapidly independently of the movementof the carriage and in no matter what position the carriage is in thedriving mechanism of the cutter will always be in gear.

I preferably secure to one side of the table a bar M acting as theelectrical conductor and adapted to travel on this bar is a trolleywheel m mounted on an arm 'm/ pivoted to the carriage. The wires extendfrom the trolley to the motor and as the carriage moves over the tablethe trolley will travel on the bar M. This bar can be insulated in anysuitable manner so as to protect the workmen.

I The perforated table is preferably made with a. zinc face as I findthat this is the best material for the purpose, and the zinc face can besecured to the body of the table in any suitablemanner. The perforationsin the table communicating with the several compartments are arranged ona line with the grooves in the face of the table and'the pipes leadingto the several compartments of the table are provided with valves 0 sothat on turning any one of the valves that section of the table can becut off from the suction pump. I preferably make the suction pump insuch a manner that it can be reversed to cause a blast of air to beforced through the openings in the table when it is desired to clear theopenings orrto aid in removing the friction cloth from the table.

' When the friction cloth is first applied to the table I preferably usea clamp such as is illustrated in Fig. 10, consisting of two plates .9,s clamped on each side of the end of the cloth and secured together by{bolts 8. One of these plates has a hooked member s adapted't'o engagethe shaft E on the carriage, so. that whenthe carriage is moved back theclamp S can be hooked on to the shaft E of the carriageand then thecarriage can be driven forward,'either by power or by hand, unrollingthe friction cloth over the bed and then it is drawn over by hand andclamped by the eccentric clamp bar B; the clamp S being first removedfrom the fabric. After the fabric is cut on the bias by the cutters andit is desired to move' it forward, then a clamp bar, such as thatillustrated in Fig. 11, is used; the bar T being mounted on the studs t,t, Fig. 1, on the front of the carriage and the cloth is clamped betweenthe edge t of the carriage and the bar T, so that when the carriage ismoved forward it 'will unroll the, fabric,

drawing it over the table in position to be cut.

The operation of the machine is as follows z-The friction cloth is woundaround the mandrel B and the clamp S, Fig. 10, is

secured to the cloth and the cloth passed over a roller B and the clamphooked onto the shaft E of the carriage. The carriage is then movedforward unrolling the friction .cloth, drawing it over the table untilthe carriage heaches the end of its forward movement, when the clamp Sis detached from the end of the cloth while the cloth isdrawn out and isfastened by an eccentric clamp bar B. After'the cloth is firmly securedto the table the valves of the air suction pipes are opened and. thesuction pump operated so as to draw the fabric firmly onto the table; ta carriage being then at its extreme forward position the mechanism forintermittently moving the carriage is operated,

as well as the mechanism for reciprocating.

the slide "and rotating the cutter. The carriage moves intermittentlyback and forth over the fabric and the cutter between every intermittentmotion cuts a strip from the body of the fabric until the carria ge isat the opposite end of the machine, then the fabric isattached to thecarriage by means of the clamp bar '1, shown in Fig. 11, when the clothis again drawn out over the table and the cutting operation repeated.

I claim l. The combination in a machine for outting cloth, of a tablehaving a seriesof perforations therein, means for producing av suctioncommunicating with the perforations in the table, so as to hold thecloth to the table, a carriage arranged to travel on the table, diagonalguides on the carriage and a cutter adapted to the diagonal guides onthe carriage so that on the reciprocation of the cutter and the movementof the carriage, the

cloth will be cut into strips oil-diagonal lines.

2. The combination in a machine for cutting friction cloth, of at-able'having grooves extending diagonally across the table, a se-v riesof openings in the table, means for producing a suction communicatingwith the perforations in the table so as to hold the cloth to the table,a carriage arranged to travel over the table, and a cutter on thecarriage for cutting the fabric on the line of the grooves in the table.

. 3. The combinatlon in a machine for cutting friction cloth, of a tablehaving grooves I arranged diagonally to the longitudinal line of thetable, a series of openings communicating with the base of the grooves,a suction box under thetable communicating with the openings, means forcreating a suction in said box, a carriage adapted to travel over thetable, rails on the carriage arranged on the same line as-the diagonalgrooves on the table, and a cutter mounted to travel on the rails to cutthe cloth in line with the grooves.

4. The combination in a machine for cutting cloth, of a table havingdiagona-l openings, perforations in the table, a suction box under thetable communicating with the perforations so as to hold the cloth downonto the table by suction, a carriage arranged to travel longitudinallyover the table, railsarranged diagonally on the carriage, a slidemounted on the rails, means for reciprocating the slide, a rotary cuttercarriedby the slide arranged to cutthe cloth on the line of the groovesof the table, and means for driving the cutter independently ofthe'reciprocating means.

5; The combination of a table having a vseries of diagonal grooves inthe face thereof,

a series of perforations in the table, a suction box under the table, acarriage adapted to travel over the table, means for intermittentlymoving the carriage forward, rails on the carriage, aslide on the rails,means for reciprocating the slide, and a cutter carried by the slide,withmeans for driving the cutter.

6. The combination of a. table on which cloth can be mounted, a carriageadapted to travel on the table, rails on the carrier and arrangeddiagonally in respect to the longitudinal lineof the table, a slide onthe rails,

,a cutter carried by the slide, means for driving the cutter, means forreciprocating the situated to travel along the diagonal edge of thecarriage, means for 7 driving the spindle independently of the re*ciprocating, mechanism, and means. formoving the table.

'8. The combinationfof a table having a carriage intermittently over theseries of diagonal'groovestherein, perfora-' tions in the tablecommunicating with the grooves,-'a suction box-under the table, d1-

i the carriage block with the reciprocating agonal partitions in thesuction box, a suction pump, pipes communicatmg with eachsection of thesuction box,'and valves in the pipes for regulating the flow of airthrough the sections of the box. v I

9. The combination of a table, a carriage adapted to travel over thetable, a cutter on the carriage, means for rotating the cutter, atoothed bar at the side of the table, means for reciprocating said bar,a dog pivoted to adapted to engage the teeth of the bar so that onthereciprocation of the bar the carriage will be moved forwardintermittently.

10. The combination of a table, a carriage mounted on the table, acutter mounted on the carriage, means for operating the cutter, atoothed reciprocating bar at the side of the table, a dog .pivo'tedtothe carriage and enaging the teeth of the bar, a lever pivoted to thetable, means a block adjustable toward and from the fulcrum of thelever, and a rod connecting the toothed bar.

11. The combination in a table, of a carriage mounted on the table,means for traversing the carriage over the table, a longitudinalshaft atone side of the table, means for rocking said shaft, an arm-mounted onthe shaft arrangedto turn with but slide upon the shaft, a slide on thecarriage, a cutter on the slide, a drive chain connected to the carriagepassing around a driven wheel, and gearing between the arm on the rockshaft and the driven wheel, whereby on the rocking of the said shaft theslide will be moved-from one side ofthetable to the other.

12. The combination of a table, a carriage mounted on the table, adaptedto be reciprocated from one side of the table to the other, a cutter onthe slide,

"means for rotating the cutter,

' on one side of the table, an arm arranged to travel with the carriageand toturn with the rock shaft, agear wheel, a rod having a crank pin,a'chain connected to each end of the slide, a sprocket Wheel over whichthe chain passes, said sprocket wheel being geared to the said gearwheel, driving mechanism, a cam, a lever actuated by and 'anarm on therock shaft connected to the said lever so that on the rotation of thefor operating the lever,

a slide on the carriage the cam,

ting friction cloth,

a rock shaft I the diagonal edge is clam name to this specification,

cam the shaft will be rocked and the slide will be re'ciprocated on thecarriage. I 1

13. The combination in a machine for cutting friction cloth, of adiagonally slotted table, a series of perforations in the tablecommunicating with the slots, a suction box under the tablecommunicating with the perforations, a carriage adapted to traveloverthe table, means for intermittently moving the carriage forward, racksat each side of the table, a transverse shaft mounted on the carriage,pinions on the shaft meshing with the racks so that the carriage can bemoved by hand, rails on the carriage lel with the slots in the table, tothe rails, means for reciprocating the slide, a spindle, a rotary cutteron the spindle, and means for driving the cutter.

14. The combination in a machine for cuts of a table, said table havinggrooves in the surface thereof and per-, forated, a suction box underthe table'communicating with the perforations, a drum at one end of thetable upon which the friction cloth is wound a clamp adapted to besecured to the enddf the cloth, and a hook on the clamp engaging thecloth 'so that when the clamp is hooked onto the'carriage and thecarriage operated it will unroll the friction cloth and carry it overthe table.

15. The combination in a machine for cut-' ing friction clothdiagonally, of a-table,'a series of diagonal grooves in the surfacethereof, perforations in the table, suction mechanism under the tablecommunicating with the said grooves, a carriage, one edge of thecarriage alini'ng with the grooves, a

cutter adapted to travel alongth sedge of .the carriage, means fordriving the cutter, a clamp bar,and means for'clampingthe said her alongthev edge of the carriage so that when it isde'sired to unwindadditional cloth ed to the carriage and the carriage moved orward.Inx'testimony whereof, I have signed my in the presence of twosubscribing witnesses. I f c LEQNARD.A-TWOOD.

I Witnesses:

' WALTER F. PUILINGER, WM. BARB.

running paralw a'slide adapted

